[PATCH 11/15] drm/i915: add HAS_POWER_WELL

[Paulo Zanoni <przanoni@gmail.com>]

From: Paulo Zanoni <paulo.r.zanoni@intel.com>

We're starting to add many IS_HASWELL checks for the power well code,
so add a HAS_POWER_WELL macro to properly document that we're checking
for hardware that has the power down well.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h      |    1 +
 drivers/gpu/drm/i915/intel_display.c |    4 ++--
 drivers/gpu/drm/i915/intel_pm.c      |    6 +++---
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9bf15e5..60e24d7 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1337,6 +1337,7 @@ struct drm_i915_file_private {
 #define HAS_PIPE_CONTROL(dev) (INTEL_INFO(dev)->gen >= 5)
 
 #define HAS_DDI(dev)		(IS_HASWELL(dev))
+#define HAS_POWER_WELL(dev)	(IS_HASWELL(dev))
 
 #define INTEL_PCH_DEVICE_ID_MASK		0xff00
 #define INTEL_PCH_IBX_DEVICE_ID_TYPE		0x3b00
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 835bec2..39f5f72 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9338,7 +9338,7 @@ intel_display_capture_error_state(struct drm_device *dev)
 
 	power_well_is_down = intel_power_well_is_down(dev);
 
-	if (IS_HASWELL(dev))
+	if (HAS_POWER_WELL(dev))
 		error->power_well_driver = I915_READ(HSW_PWR_WELL_DRIVER);
 
 	for_each_pipe(i) {
@@ -9394,7 +9394,7 @@ intel_display_print_error_state(struct seq_file *m,
 	int i;
 
 	seq_printf(m, "Num Pipes: %d\n", dev_priv->num_pipe);
-	if (IS_HASWELL(dev))
+	if (HAS_POWER_WELL(dev))
 		seq_printf(m, "PWR_WELL_CTL2: %08x\n",
 			   error->power_well_driver);
 	for_each_pipe(i) {
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 90562bc..9e22ad3 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4080,7 +4080,7 @@ bool intel_power_well_is_down(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
-	if (IS_HASWELL(dev))
+	if (HAS_POWER_WELL(dev))
 		return !(I915_READ(HSW_PWR_WELL_DRIVER) & HSW_PWR_WELL_ENABLE);
 	else
 		return false;
@@ -4092,7 +4092,7 @@ void intel_set_power_well(struct drm_device *dev, bool enable)
 	bool is_enabled, enable_requested;
 	uint32_t tmp;
 
-	if (!IS_HASWELL(dev))
+	if (!HAS_POWER_WELL(dev))
 		return;
 
 	tmp = I915_READ(HSW_PWR_WELL_DRIVER);
@@ -4127,7 +4127,7 @@ void intel_init_power_well(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
-	if (!IS_HASWELL(dev))
+	if (!HAS_POWER_WELL(dev))
 		return;
 
 	/* For now, we need the power well to be always enabled. */
-- 
1.7.10.4